Atmospheric vertical velocity - a crucial component in understanding proximal deposition of volcanic ash

•A weak eruption at Sakurajima was studied using high-resolution modelling.•Atmospheric vertical velocity (w) was key in recreating observed sedimentation.•Not accounting for w led to a 2-5 m s−1 discrepancy in the fall velocity estimation.•Mountain waves can enhance proximal deposition of fine ash...

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Veröffentlicht in:Earth and planetary science letters 2021-07, Vol.566, p.116980, Article 116980
Hauptverfasser: Poulidis, Alexandros P., Biass, Sébastien, Bagheri, Gholamhossein, Takemi, Tetsuya, Iguchi, Masato
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Sprache:eng
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Zusammenfassung:•A weak eruption at Sakurajima was studied using high-resolution modelling.•Atmospheric vertical velocity (w) was key in recreating observed sedimentation.•Not accounting for w led to a 2-5 m s−1 discrepancy in the fall velocity estimation.•Mountain waves can enhance proximal deposition of fine ash (
ISSN:0012-821X
1385-013X
DOI:10.1016/j.epsl.2021.116980